baber/WOPTO huggingface dataset:
Patent GB-541753-A (GB)
Title: Improvements in or relating to optical systems composed of lenticules
IPC: G03B21/62
Filed: 1940-05-03
Abstract: 541,753. Optical systems ; projection screens. GABOR, D. May 3, 1940, No. 7983. [Class 97 (i)] An imaging system comprises two arrays of cylindrical lenticules. 9, 10 having parallel axes and on opposite sides of a single sheet or of two sheets joined in optical contact, the spacings of the lenticules in the two arrays being different, and neither an integral multiple of the other; the separation of the arrays is equal to the algebraic sum of their focal lengths fa, fb, if both the arrays are transmitting or, is one of the arrays is reflecting or backed by a plane reflector, is equal to the algebraic sum of twice the focal length of the reflecting lenticules and the focal length of the others. The spacings of the arrays may be in the ratio of two prime numbers having a difference which is small compared with them. The Specification demonstrates that the arrays are equivalent to " superlenses " causing parallel incident light to emerge in parallel or nearly parallel bundles which unite to form " superfocal " lines much smaller in number than the lenticules in the arrays ; under certain conditions only one " superfocus " is formed. Complete particulars for a moulded polystyrene plate capable of concentrating solar energy in a focal line 1.8 metres from the plate, to heat liquid in a tubular boiler, are set out in the Specification. If the energy is to be concentrated approximately to a point, two plates having lenticules at right angles to one another may be used, or the lenticules may be formed as concentric toroidal ones. Other uses comprise condenser lenses, lighthouse lenses, part of projection screens according to Specification 541,751, and as members of projection systems of wide aperture for stereoscopic projection as described in Specification 541,752; examples of projection systems embodying such plates, and serving to enlarge the projector aperture, are described. The lenticular arrays form the equivalents of large lenses without using so much material, and permit the possibility of imitating very large or very small refractive indices, with the result that magnifications are produced which are not in the ratio of image distance to object distance. Manufacture may be effected by assembling ribbons shaped by rolling plastic materials between geared profiled rollers, or by assembling small rectangular sheets moulded by two plates set in a jig, the plates being relatively and progressively moved to be suitable for different parts of the built-up sheet. The ribbons or small sheets may be held between glass plates or in metal frames. The complete sheet may be composed of glass, or of various plastic materials, or of sheets of different refractive indices joined in optical contact at an interface which may be rendered diffusing, and may also be curved about an axis parallel to the lenticular axes ; its lenticules may be all convex or convex on one side and concave on the other. Specification 506,540 also is referred to.
Patent GB-1458770-A (GB)
IPC: C08L67/00
Filed: 1974-02-21
Abstract: 1458770 Antistatic polyamides MONSANTO CO 21 Feb 1974 [22 Feb 1973] 7986/74 Heading C3R An antistatic mixture comprises (a) a fibreforming polycarbonamide which comprises 6 to 24 wt. per cent of aromatic nuclei and is either a copolyamide or a melt-blend of at least two different polyamides, and (b) as a distinct phase dispersed in (a) 1 to 15 wt. per cent of a non-fibre-forming polyalkylene ether transesterification product formed by transesterifying (i) ROOC-Y-COOR and (ii) where R is C 1-4  alkyl; Y is or C 1-20  alkylene; R<SP>1</SP> is a C 2-4  hydrocarbon radical; R<SP>11</SP> is C 12-24  alkyl; A and R<SP>111</SP> are C 2-4  alkylene; each n is an integer their total being 25 to 75; and X is H or C 1-4  alkyl; the mol. ratio of (i) : (ii) being from 1 : 9 to 1:1. Component (b) may have a M.W. up to 30,000. Component (a) preferably comprises nylon 6 or 66 and 6I and/or 6T units. The mixture may be formed into fibres for use in carpet piles, in such fibres (b) preferably takes the form of particles of diameter 0À05 to 1À5 micron and length at least 15 microns. In Example IV 75 p.p.m. Cu were also included in the composition.
Patent GB-165170-A (GB)
Title: Apparatus for measuring angles in relation to the horizontal plane
IPC: G01C1/12
Filed: 1920-03-17
Abstract: 165,170. Bonneau, E. E. J. March 17, 1920. Addition to 149,312. Gyroscopic apparatus.-In instruments as described in the parent Specification, the datum is defined by a collimator independent of the telescope. As shown in Fig. 1, the collimator 6 and telescope 5 are secured to the carrier 1, which is pivoted to the base 2 and supports the gyroscopic top 3 carrying the mirror 4. The base 2 being placed on the surface whese inclination is to he measured, the carrier is turned until the image of the datum coincides with the cross-wires of the telescope and the angle between the carrier and the base is read off. A mirror and reflecting prism may be interposed between the mirror 4 and the telescope. The telescope &c. may be mounted in collars carried by the hinged support. In the construction shown in Fig. 5, light from the datum 15 is directed on to the mirror 4 by a pivoted mirror 16 having a pointer 17 moving over a scale 18 on the support 1. In this arrangement the support is placed on the surface to be tested and the mirror 16 is turned to secure the coincidence required. In the form shown in Fig. 6, the collimator 19 is carried by the gyroscope and the telescope is rotatable about an horizontal axis and has an arm 21 carrying a lamp 22. The telescope is turned until the desired coincidence is obtained, its axis being then horizontal. In a modification of this construction a mirror at an angle of 45‹ to the axis of the collimator is mounted in the collimator; the axis of the telescope is then vertical.
Patent GB-231499-A (GB)
Title: Improvements in and connected with letter cancelling, post marking and like machines
IPC: B41K3/44
Filed: 1925-03-25
Abstract: 231,499. Hansen, G. A. March 29, 1924, [Convention date]. Sheet-separators.-In mail-feeding devices for postmarking and like machines of the type comprising a separating roller 5 rotating in the opposite direction to a coacting feed roller 4, the roller 5 is mounted on an axle capable of lateral motion and is provided with a rubber band or coating 8 extending into a free space between spaced bands or coatings 7 on the roller 4. The effect of this arrangement is to bend the letters and so increase the frictional grip thereon. The roller 5 is carried in an arm 9 swing- ing about a pivot 18 and is pressed towards the roller 4 by a spring 10, the end of which is positioned against one of a number of stops. A small steel roller 11 normally in contact with the roller 4 is carried by an arm 12 lying above the arm 9 and mounted on the same pivot 18. The arms are connected together by a pin 13 passing through lugs 14. 15 on the arms 9, 12 respectively, a spring 16 between the lugs and an adjusting nut 17 on the end of the pin, the arrangement providing for relative adjustment of the arms to compensate for wear in the rubber bands and allowing movement of the roller 11 according to the thickness of the letters. These are stacked in a hopper, the bottom of which consists of a moving band 1 which feeds them into a throat formed by a spring plate 2 and feed roller 3. A guide-plate 19 slotted to receive the rollers 5 and 11 is carried on the arm 12.
Patent GB-1112071-A (GB)
Title: Improvements in or relating to the manufacture of flat glass
IPC: C03B18/06
Filed: 1965-02-25
Abstract: In the manufacture of glass using the "float" technique such as described in Specifications 769,692 and 893,663 the configuration of a transverse cross-section of the glass ribbon is controlled by containing the glass when it initially arrives on the molten metal bath and thereby conserving the heat so that the glass is of low viscosity as a step precedent to establishing a layer on said bath, whereby the glass in the layer flowing laterally to the limit of its free flow is developed into a ribbon of glass of uniform thickness. Molten glass flows freely from a spout on to a molten metal bath and is contained between a pair of spaced refractory walls 15 (Fig. 2, not shown), which walls are parallel both to themselves and the longitudinal axis of the molten metal bath. These walls extend for a distance such as 2 1/2 ft. along the length of the tank.  By being so confined between these walls the molten glass retains its heat longer than in previous methods and thereby acquires a uniform configuration and temperature.  Further extension walls 19, pivoted to the ends of walls 15 remote from the spout 4 and floating on the molten metal bath and splayed at an angle to the walls 15 further restrict the ribbon formation by limiting the lateral extent of free flow of the molten glass.  These extensions are formed of a material wetted by the glass but at their free ends have inlays 20 of a non-wetting material such as carbon.  These extensions 19 are water-cooled, the cooling pipes 24a also being used to set the angle at which the extensions are splayed.  This angle is preferably 25 degrees.
Patent GB-550357-A (GB)
Title: Improvements in or relating to force feed lubricating pumps
IPC: F16N13/02
Filed: 1941-07-01
Abstract: 550,357. Force feed lubricating pumps. BLISS, J., and SULLINGS, A. GOULD-. July 1, 1941, Nos. 8281 and 12263. Addition to 538,170. [Class 102 (i)] A force feed lubricating pump comprises a plurality of lubricators of the type described in the parent Specification accommodated within a common casing 10, Fig. 2, and actuated by a single driving member. Two rotary plunger-carrying blocks 15 arranged back-toback may be pressed outwardly by springs 25 and driven by a worm and worm-wheel 23, 28 between them. The casing 10 may include two partitions 101 to receive the blocks 15 in a fluid-tight manner, and the blocks 15 may have spherical outer swfaces 34 to fit closely against the internal wall of the casing 10. The blocks 15 may have axial bores 29 serving as oil feeds and communicating with an inlet 30 in one end wall of the casing 10, or the bores 29 may be supplied by passages 320 leading from the chamber located between the two partitions 101 and having an inlet 31. Each block 15 may carry two plungers 16, 116 at right angles to one another in different planes and operated by two sets of tappets 20, 120. Two outlet conduits 32, 132 are provided and have ports 33, 133 at different radii to serve stationary distributing ports 12, 122. Alternatively, a force feed lubricating pump comprises two lubricators 40 of the type described in the parent Specification arranged face-to-face, the two rotors 41 being coupled by a member 43 which extends through the stationary valve members 42 and which is surrounded by an oiltight casing 46 constituting an oil-feed chamber having passages 48, 49 communicating with the pump feeds. A member of such lubricating pumps may be coupled together as at 50 and driven, as by means of a pulley 60, from a single electric motor, each pump being supplied by a pipe 47 from a main tank 51.
Patent GB-329078-A (GB)
Title: Improvements in or relating to gas and like cocks or taps
IPC: F16K35/02
Filed: 1929-03-14
Abstract: 329,078. Nicolaisen, J. W., and Jorgensen, E. H. H. March 14, 1929. Locking-catches.-Relates to gas cocks or taps having removable or non-removable actuating keys which are pressed in against spring action for releasing an internal locking device and then turning the plug. In one arrangement with a non-removable key the spindle 6, Fig. 2, of the key A is provided with cross projections 7, 8 of unequal height which are in constant engagement with recesses 9 in the top of the plug 2 and, when the cock is closed, are engaged by spring action 5 with recesses 11 on the under side of the screw cover 10 to lock the plug in its closed position. This position is located by end abutments of an arcuate projection 12 on the under side of the cover 10 against which the higher projection 8 is arrested. In a removable key arrangement, the key A, Fig. 6, is formed with projections 16, 17 of unequal radial length, and the locking projections are formed on a short internal cut-off portion 14. When applying the key A the projections 16, 17 pass through outer key apertures 20 in the cover 10 into a chamber 18 and then, after turning through 90‹, pass through lower key apertures 19 Downward pressure thereupon disengages the projections 16, 17 with the recesses in the plug which can then be turned to open. In the closing movement the longer projection 17 on the key is arrested by the end abutment 13 of an arcuate projection of the cover. In this closed position the projections 16, 17 register with the openings 19 in the cover through which they pass under the action of the spring 15 whilst the locking projections' on the part 14 pass into locking engagement with the under side of the cover. A modification is described in which the key has upper and lower projections and one of the cross projections on the short member 14. has an upstanding projection having a locking engagement with a recess' under the cover. In Fig. 13 the locking-member is a loose ring 27 with a diametral crossbar engaging a slot 9 in the plug, and an upstanding locking projection 28 engaging the cover. The ring is unlocked by a laterally inserted key A which also engages the slot 9 for turning the plug. In a modification of Fig. 6 the locking-member 14 is slotted and engaged laterally by a key to release the same and turn the plug. Other modifications are described in which the cover instead of being screwed directly to the cock casing is secured by a screwed ring, and also in which the plug stem is squared to take a square socket key and slotted to receive a locking crossbar projected into locking engagement with the cover by a spring.
Patent GB-1389664-A (GB)
Title: Petroleum extract
IPC: C10G31/08
Filed: 1971-04-01
Abstract: 1389664 Gibberellins from petroleum BRITISH PETROLEUM CO Ltd 3 March 1972 [1 April 1971] 8376/71 Heading B1H [Also in Division C1] A method of preparing a bio-active extract from petroleum or a petroleum fraction comprises obtaining an aqueous solution of watersoluble constituents of the petroleum or petroleum fraction and passing a solution of the water-soluble constituents through a chromatographic column, and separating out from the chromatographic column an extract having gibberellinic activity. The petroleum or a solution thereof in benzene, toluene or xylene may be extracted with 1% to 5% sodium or potassium hydroxide, the extract acidified to pH 6 to 10 then extracted with an alcohol an ether or ethyl acetate and the organic solution so obtained chromatographed on dextran.
Patent GB-296074-A (GB)
Title: Process for the manufacture of potassium manganate
IPC: C01G45/12
Filed: 1928-03-20
Abstract: 296,074. Soc. Chimique des Usines du Rhone. Aug. 26, 1927, [Convention date]. Addition to 292,991. Potassium manganate. - In the process described in the parent Specification, caustic potash lyes containing less than 70 per cent potassium hydroxides may be employed for the preparation of potassium manganate, without using an excessive rate of flow of air or oxygen, provided that the temperature is raised above 200‹ C., preferably between 210‹ and 220‹ C.
Patent GB-356823-A (GB)
Title: Improvements in or relating to coin-freed mechanism
IPC: G07F5/02
Filed: 1930-03-17
Abstract: 356,823. Coin-freed apparatus. MAcDONALD, H., 28, Victoria Street, and FULTON, J., 58, Park Road, Chiswick, both in London. March 17, 1930, No. 8511. [Class 27.] Coin action, weight ; coin - discharging mechanism. - In coin - freed mechanism an actuating lever C keyed to a handoperated shaft A<1> is initially coupled to a main operating lever D loose on the shaft, a" stop H being provided which trips the connection between the members C, D unless a coin is inserted to displace the stop. The coupling comprises a stirrup E pivoted to the lever D and held in engagement over the end of the lever C by a light spring E<1>. It has a toe E<2> in the path of which the stop H lies. The stop is carried by a lever H<1>, H<2> connected by a link H<3> to a lever J which carries a projection J<1> extending into the coin shoot K through a slot J2. A coin inserted into the shoot depresses the lever J to displace the stop H and is arrested by a stop L on a lever L<2> connected to a lever M, M<1> the arm M<1> of which has a roller M<2> engaging a cam N on the operating lever D. Movement of the lever D displaces the stop L allowing the coin to drop and the lever J to return to its initial position. A pawl F on the lever C is held in engagement with a toothed quadrant F<1> as long as the members C, D are coupled together to insure a full stroke. If the stirrup E is tripped, a spring G<1 >disengages the pawl, allowing the member C to be moved freely without jamming. The operating lever D is connected to the delivery mechanism or other part of the coinfreed apparatus to be actuated by means such as a rope D<1>. At the end of the forward stroke the stirrup is tripped by a stop 0 and the member D returned by a spring independently of the actuating handle.
Patent GB-116542-A (GB)
Title: Improved Means for Carburetting with Liquid Hydrocarbon Fuels for Internal Combustion Engines.
Inventor: HAMILTON-GRAPES GEORGE
IPC: F02M1/00
Filed: 1917-06-14
Abstract: 116,542. Grapes, G. Hamilton-. June 14,1917. Spray carburettors; vaporizers, external.-An expansion chamber 5 between the carburettor C and the engine is enclosed by a hot-air chamber 1, from which the hot air passes by a pipe 11 to the main air inlet of the carburettor. The chamber 5 is of circular section and approximately semi-circular form. and the inlet 7 and outlet 8 are of reduced area. The air supply to the chamber 1 is heated by the exhaust gases, and may be diluted with regulated supplies of cold air by means of valves in the pipe leading to the chamber 1 and valves 13, 14 in the pipe 11. A thermometer is preferably provided in the chamber 1 as a guide to the regulation of the cold-air valves. A, further supply of hot air may be admitted from the chamber 1 to the fuel mixture by a conduit 4 and a double-beat valve 21, 22. This valve is controlled by a spring 25 and opens only when the engine suction is between certain limits, depending on the adjustment of the spring 25, the valve member 21, and the valve seatings 19, 20. A cold-air chamber 17 communicating with the passage 4 has a sliding-sleeve inlet valve 30 adjustably connected to the throttle arm 38 of the carburettor. The chambers 1, 5 are of highly conductive metal such as aluminium or copper.
Patent GB-126820-A (GB)
Title: Improvements in Electric Hand Lamps.
Inventor: BEIN JOSEPH
IPC: F21L4/00
Filed: 1918-05-24
Abstract: 126,820. Bein, J. May 24, 1918. Press-button switches; mechanically-released switches.-A band having a limited rotary movement on the casing of the torch is adaptetd to engage a plunger switch and prevent unintentional closure of the circuit. The band may itself actuate the switch. In one form, the band 3, Fig. 3, has a keyhole slot, the wide end of which allows passage of a flange 4 on the plunger. The metal of the band may be pressed outwards around the slot as shown, so as to accommodate, the flange when the switch is closed; or the flange may enter a recess in the casing. In another form, the end of the plunger 17, Fig. 13, is rounded and enters a dent 18 in the band when the switch is open. In either form, the motion of the band may be limited by a pin 15 and slot 14. The closed band shown may be replaced by an incomplete spring band.
Patent GB-124109-A (GB)
Title: Improvements in Crates or Packing Cases.
Inventor: BROOKS-VOS EUGENE CORNELIUS
IPC: B65D6/16
Filed: 1918-05-25
Abstract: 124,109. Vos, E. C. Brooks-. May 25, 1918. Folding or knockdown crates and cases. - A. knockdown crate or packing-case comprises separable top and bottom members 5, Fig. 3, and four sides 6, Fig. 2, hinged together in pairs so as to form two separable foldable members. The sides 6 are provided with dowel pins 7, 9 to engage holes 8, 10 in the abutting parts; in addition, holes are formed in the abutting parts of the sides, top, and bottom to receive securing- wires, or wires are fastened round adjacent battens.
Patent GB-705283-A (GB)
Title: Film and tape guide means for cinematograph projectors, cameras, recording, printingand similar apparatus
IPC: G03B1/42
Filed: 1951-04-16
Abstract: 705,283. Kinematograph apparatus. PICKLES, H. April 15, 1952 [April 16, 1951], No. 8791/51. Class 97(1) [Also in Groups XVI and XXXVIII] A film or tape guiding means in a kinematograph projector, camera, recording, printing or similar apparatus, comprises a rest of three guide rollers 10, 12, 14 mounted on studs between the film or tape supply and take-up means 6, and arranged relative to each other such that lines drawn joining their main axes would form a triangle, the one roller 14 having an end flange 16 and a spring 15 mounted on its shaft to retain the said roller 14 in a fixed axial position.
Patent GB-1103993-A (GB)
Title: Improvements in or relating to zoom-type objectives
IPC: G02B21/22
Filed: 1966-03-01
Abstract: 1,103,993. Microscope objectives. ZVODYX PR#UMYSLOV AUTOMATIZACE KO#S#I#RE N#ARODNI PODNIK. March 1, 1966 [March 4, 1965], No. 8861/66. Heading G2J. A zoom type objective for forming in a short distance images of near objects, i. e. neither the object nor image distance exceeds about four times the length of the objective and the object may itself be an image produced by another objective, comprises a front fixed collective part, a movable middle dispersive part of focal length f' II and a movable rear collective part of focal length f' III wherein one or both of the following are satisfied: - a being the fixed object-to-image distance of the whole objective and Z being the zoom ratio. Optical data are provided for four examples, the first, Fig. 3, having a zoom ratio of 7 and the others a zoom ratio of 10. A pair of such objectives may be used in a stereomicroscope.
Patent GB-543184-A (GB)
Title: Improvements in and relating to rotary vane pumps
IPC: F04C29/12
Filed: 1940-05-20
Abstract: 543,184. Valves. FULCHER, F. C. May 20, 1940, No. 8940. [Class 135] [Also in Group XXVI] Non-return valve discs 28 are pressed on their seats by lightsprings 29 supported by closing pieces 31 which are held permanently against shoulders 32 by heavy springs 26 and screw caps 30.